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Finding the Fourth Proportional to 48,970.40, 73,455.60 and 40,330.40

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Solution

The fourth proportional to 48,970.40, 73,455.60 and 40,330.40 is: 60,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,970.40 : 73,455.60 = 40,330.40 : x
  2. Step 2: Convert to fraction form
    48,970.40/73,455.60 = 40,330.40/x
  3. Step 3: Cross multiply
    48,970.40x = 73,455.60 × 40,330.40
  4. Step 4: Simplify right side
    48,970.40x = 2,962,493,730.24
  5. Step 5: Solve for x
    x = 2,962,493,730.24/48,970.40
  6. Step 6: Final answer
    x = 60,495.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.